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Description: We are looking for a skilled developer with experience in VAPI API and GoHighLevel API integration. Project Overview: We have a VAPI AI assistant already built. The call flow works as follows: Caller Interaction AI asks for address or tracking number. To proceed, both must be provided. This information must be captured and posted into GoHighLevel. Sales Pitch & Appointment Scheduling After the sales pitch, the AI schedules an appointment. Required appointment fields: Name, Address, City, State, Zip, Phone Number. Check GoHighLevel calendar availability before booking. Post confirmed appointment to the calendar. Create a new Opportunity in GoHighLevel. Send a notification to our team/employers. Workflow Requirements Press 1 to speak to a live agent. Press 9 to be removed from the list. Current Status: VAPI assistant is already built. Direct GoHighLevel integration is not working as expected due to outdated documentation. We’ve seen this done using Railway + n8n workflows (two workflows: one to capture initial caller info, another to capture appointment details). What We Need: Fix or rebuild the GoHighLevel integration. Ensure proper data capture and posting for both the initial info and appointment booking stages. Confirm call flow logic works end-to-end with VAPI, GHL, and appointment scheduling. Preferred Experience: VAPI API GoHighLevel API n8n or similar automation tools Railway (deployment environment) or other Experience with call workflows and data syncing Please provide: Relevant examples of similar integrations you’ve done. Your approach to ensuring smooth and reliable data transfer. Estimated timeline and cost.
Project ID: 39686055
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Hello, you need your VAPI assistant to capture address + tracking, honor Press 1/Press 9, check GoHighLevel calendar availability, then book the appointment, create the Opportunity, and notify your team end-to-end. Recently I rebuilt a VAPI→GoHighLevel integration on Railway with n8n using two workflows (intake and scheduling), bypassed outdated docs, and reduced failed posts by 90% while keeping calendars in sync. Plan: use VAPI and GHL APIs with n8n or a small Railway service, validate required fields, live-check availability before booking, create appointment + opportunity, and add webhook retries; audit/patch 1–2 days or rebuild 3–5 days, ~$800–$1,500. If that works, I can share a quick plan and spin up a test call flow today. Best regards
$200 USD in 1 day
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31 freelancers are bidding on average $219 USD for this job

Hello! I have extensive experience in integrating APIs, particularly with VAPI and GoHighLevel, which aligns perfectly with your project requirements. My background includes working with call workflows and data syncing to ensure seamless user experiences. Recently, I completed a similar project where I integrated an AI-driven assistant with a CRM system. The project involved capturing user inputs and scheduling appointments through automated workflows, similar to what you are looking for. For your project, my high-level technical plan would involve reviewing the existing VAPI setup, troubleshooting the GoHighLevel integration issues, and using n8n workflows to ensure that data is accurately captured and posted. I would also implement checks for calendar availability before confirming appointments, and I would ensure that notifications are sent to your team. I would love to discuss this project further and provide more detailed insights into my approach. Best regards, Inderdeep
$200 USD in 7 days
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Hello, As a Full Stack Developer with an extensive background in API integration and web development, including relevant experience in VAPI API and GoHighLevel API, I am confident that I'm the right fit for your project. With an inherent understanding of call workflows and data syncing, I approach every task with meticulous attention to detail to ensure smooth and reliable data transfer. To minimize complications with the GoHighLevel integration, I suggest utilizing Railway + n8n workflows. This method has proven itself to be highly effective in capturing caller information as well as appointment details in integrations similar to yours, precisely addressing the challenges you're facing with direct GHL integration due to outdated documentation. Having been exposed to different types of projects such as Mobile & Web App Development, CRM Development, API Development, etc., I have acquired a versatile skill-set needed for this particularly complex assignment. My proficiency extends not only to PHP based frameworks like Laravel and Yii but also includes Node.js and Python/Django which can greatly enhance the efficiency and reliability of your project. Moreover, implementing my experience in building Web-based POS systems and ERPs can significantly aid in developing a robust and secure solution for your needs. Thank you
$300 USD in 4 days
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Hello brettb, I am confident I can fix or rebuild your GoHighLevel integration with VAPI AI assistant to ensure smooth data capture and appointment scheduling. I have experience working with APIs, call workflows, and automation tools like n8n, and I understand deployment on platforms like Railway. My approach involves carefully reviewing your existing workflows, updating API calls according to the latest docs, and testing the entire flow end-to-end to guarantee reliability. I estimate the project to take around 7 days with a budget of $500.
$500 USD in 7 days
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Hello, I am excited about the opportunity to work on integrating VAPI with GoHighLevel API for call flow and appointment booking. I have experience with VAPI API, GoHighLevel API, n8n, and Node.js. I will ensure seamless data transfer, fix or rebuild the integration, and validate the call flow logic. My approach involves meticulous testing at each stage. I will provide examples of similar integrations, estimate timeline and cost in line with your needs. Looking forward to collaborating with you, John Allen
$225 USD in 1 day
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Hello Brett B., I went through your project description and it seems like a perfect fit for my expertise. I’m a Top-Rated Full Stack Developer with over 500+ successful projects, specializing in WordPress, Shopify, custom UI/UX, and high-performance web development. I am an experienced professional with extensive expertise in: ✅ WordPress, Shopify, Laravel, PHP, React.js, Vue.js ✅ MongoDB, MySQL, PostgreSQL ✅ SEO, Payment integrations (PayPal, Stripe, Square) ✅ Pixel-perfect UI/UX and responsive design I ensure secure, fast-loading, and SEO-friendly websites that perform flawlessly across devices. Please come over chat and discuss your requirements in more detail. I also offer: ✅ 1-month free support after delivery ✅ FREE basic SEO setup ✅ Security and backup configuration included Regards, Kausar Parveen Multimedia Graphic Designer & Full-Stack Developer Your Partner in Digital Excellence
$200 USD in 3 days
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Hello, I'm Khelifi Salmen, a full-stack developer with 5+ years specializing in API integrations and automation systems. I've successfully implemented 15+ VAPI/GHL pipelines for clients, including call flow automations with n8n/Railway. Here's how I'll approach your project: MY PLAN: 1. Audit existing integration points and identify GHL API compatibility issues 2. Develop two Railway-hosted n8n workflows (caller data capture + appointment booking) 3. Implement calendar availability checks with real-time confirmation 4. Configure GHL opportunity creation & team notifications 5. Conduct end-to-end testing with validation metrics KEY ADVANTAGES: - VAPI and GoHighLevel API expertise - Experience with exactly this n8n/Railway integration pattern - Slack/Zapier notification expertise Could you clarify: 1. Which specific GHL endpoints are failing in your current implementation? 2. Are there custom fields required beyond standard contact/opportunity fields? 3. Should we maintain existing infrastructure or go for full rebuild? Best regards, Khelifi Salmen
$350 USD in 10 days
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‼️ If you're not happy, you don't pay ‼️ "I am a perfect fit for your project. I understand the need for seamless data transfer and integration with VAPI API and GoHighLevel API for efficient call flow. While I am new to freelancer, I have extensive experience in API integrations and automation tools like n8n. I have successfully handled similar projects off-site, ensuring clean and professional data syncing. I would love to chat more about your project! Regards, Piyush Gupta
$200 USD in 5 days
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Hey Brett B., Good afternoon! I’ve carefully reviewed your requirements and am very excited about this opportunity. I’m a full-stack Node.js developer with extensive experience in n8n, CRM, Node.js and JSON. I am confident in my ability to deliver high-quality, scalable, and efficient web applications. I can complete your project on time, ensuring your complete satisfaction. I am well-versed in integrating backend and frontend components to build seamless, high-performance solutions. Please check my portfolio for more details about my projects and skills. I’m ready to discuss your project and can start immediately. Looking forward to hearing from you and exploring how I can contribute to your project. Best Regards
$100 USD in 3 days
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Hello Brett B., I hope this message finds you well. My name is Mikhail, and I'm reaching out to express my interest in your project titled "VAPI to GoHighLevel API Integration – Call Flow & Appointment Booking" With extensive experience and a strong skill set in n8n, Node.js, CRM and JSON, I am confident in my ability to deliver outstanding results that meet your expectations. I have a proven track record of successfully completing similar projects, and I am eager to bring my expertise to your initiative. Understanding the importance of timely delivery and budget constraints, I am committed to providing efficient solutions without compromising on quality. I prioritize clear communication and collaboration, ensuring that we are aligned throughout the project's duration. I would be thrilled to discuss how I can contribute to your project's success in more detail over chat. Looking forward to the opportunity to work together. Best regards, Mikhail
$300 USD in 5 days
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✅ IF YOU’RE NOT HAPPY YOU DON’T PAY ⚠️ “I’ve worked on a similar project to this and it was very successful with seamless GoHighLevel API integration. I understand the importance of clean and professional data syncing to ensure a user-friendly experience throughout the appointment scheduling process.” While I am new to Freelancer, I have 12+ years experience with VAPI API and GoHighLevel API integration, n8n automation tools, and Railway deployment environment. I guarantee efficient results and a seamless workflow. “I would love to chat more about your project! The worst that can happen is that you walk away with a free consultation from my 12 years of experience in the industry.” Regards, Jason M
$150 USD in 3 days
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Hi There!!! I have thoroughly studied your project description about integrating VAPI AI assistant with GoHighLevel API for call flow and appointment booking. I believe I am the best fit for this job because I have deep experience working with both VAPI and GoHighLevel APIs along with workflow automation tools like n8n. * Skilled in fixing and rebuilding API integrations to ensure smooth, reliable data transfer * Experienced with call flow logic, appointment scheduling, and CRM data syncing * Proficient in Node.js and automation platforms like n8n and Railway for deployment I provide essential services including API integration, database management, testing, and will deliver complete source code and documentation upon project completion. With 9+ years experience as a full stack developer, I have completed similar projects involving CRM and AI assistant integrations ensuring seamless workflows. Looking forward to chat with you for make a deal. Best Regards Elisha Mariam!
$291 USD in 21 days
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Hello Brett B., I am Maryam Abbas, a Facebook Marketing expert with 4 years of experience. I have carefully read the requirements for the VAPI to GoHighLevel API Integration project. I have extensive experience working with VAPI API, GoHighLevel API, n8n workflows, and Railway deployment environments. To address the project needs, I will focus on fixing or rebuilding the GoHighLevel integration, ensuring accurate data capture and posting, and confirming the seamless functionality of the call flow logic. I have a proven track record of successful project deliveries and positive client feedback over the past 4 years. Please review my portfolio at https://www.freelancer.pk/u/maryam951 and let's discuss further details in chat. Best regards, Maryam Abbas
$200 USD in 5 days
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Hi, I understand your VAPI AI assistant is built but the direct GoHighLevel integration isn’t working as expected, especially for capturing caller info and booking appointments. You need a smooth end-to-end call flow with reliable data syncing into GHL. I’m a full-stack developer & solution architect with 15+ years’ experience in API integrations, automation (n8n, Zapier, custom NodeJS flows), and call workflow deployments. I’ve handled VAPI → GHL connections before, including Railway-hosted automation and multi-step data capture. Here’s my proposed approach: * Audit existing VAPI → GHL connection and pinpoint breaking points in the outdated API calls * Rebuild the integration using NodeJS middleware or n8n workflows to capture both initial caller info and appointment details * Check GHL calendar availability in real time before booking, post appointment, and create opportunities * Implement “Press 1” live agent routing and “Press 9” opt-out handling within VAPI logic * Test the entire flow in staging to ensure accuracy, speed, and reliability I have similar integrations in my portfolio and can share examples. You’ll get proactive updates during the build and post-project support to keep the workflow running smoothly.
$180 USD in 7 days
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Hello, I liked your project VAPI to GoHighLevel API Integration – Call Flow & Appointment Booking, which aligns perfectly with my professional expertise. I bring extensive experience in CRM, Node.js, JSON, I can ensure timely delivery within 3 days. I'm committed to exceeding your expectations and would welcome the opportunity to discuss your requirements in detail.
$100 USD in 3 days
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This is exactly the kind of work I love doing. I have extensive experience with VAPI API and GoHighLevel API integrations, using tools like n8n for workflow automation. I've successfully completed numerous projects off-platform similar to what you're looking for. I always ensure smooth and reliable data transfer with a keen focus on end-to-end functionality. I'm happy to offer insight even if you don't go with me. Regards, Anne S.
$200 USD in 5 days
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My experience aligns perfectly with what you're looking for. I understand the need for a seamless VAPI and GoHighLevel integration. I specialize in VAPI API and GoHighLevel API integration, ensuring clean, professional, and automated data syncing. I may be new to this platform, but I’ve successfully completed many projects outside of it and bring strong, proven expertise. I have a track record of creating user-friendly workflows that optimize call flow logic. Let's discuss your project needs further for a successful collaboration! Looking forward to discussing your project in more detail! Regards, Kyle Faddel
$150 USD in 10 days
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Let’s build something solid, functional, and flexible while fixing the GoHighLevel integration seamlessly. My experience in VAPI API and GoHighLevel API aligns perfectly with ensuring smooth data transfer and reliable appointment scheduling. I specialize in call workflows and data syncing, utilizing tools like n8n and Railway for efficient automation. With proven examples of successful integrations like yours, I can deliver on-time and within budget. I’m glad to explore next steps if this feels like the right fit for your project. I’m here to contribute and will always be upfront about what’s realistic and how I can add value. Regards, Tas
$150 USD in 14 days
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I was excited to come across your project, it’s exactly the kind of challenge I love taking on. I always create results that truly make an impact. I specialize in crafting clean, modern, and high-performing digital solutions. From web design to automation, I help businesses stand out in a crowded market. While I’m new to Freelancer, I bring real-world experience from delivering projects for clients. Let’s connect and explore how I can help bring your vision to life. Best regards, Thomas Client name is brettb
$150 USD in 14 days
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As an experienced programmer and data analyst, I possess a unique blend of skills that make me particularly well-suited for this project's intricate task of integrating VAPI and GoHighLevel APIs. In my career, I have handled numerous API integrations, and my familiarity with n8n automation tools and Railway deployment environment can prove to be especially valuable to fix or rebuild the GoHighLevel integration. Moreover, I've rich experience in call workflows and data syncing, which will enable me to ensure reliable data transfer both for the initial info and appointment booking stages - creating new Opportunities in GoHighLevel, scheduling appointments after the sales pitch, and posting confirmed appointments on the calendar while simultaneously sending notifications to designated employees. Proven good practices are vital for any integration project - as an expert in AI and machine learning, I understand the significance of smooth data flow. To that end, my approach entails stringent testing at every stage of development to ensure seamless end-to-end call flow between VAPI, GoHighLevel API and appointment scheduling. Everything will be under constant review guaranteeing high performance matching your described needs within your time frame.
$300 USD in 7 days
3.5
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Hi my next Client, You don't have to pay if you are not happy with your requirements, I am the Developer you want to work with! Let's get you going. I understand the need for seamless VAPI API and GoHighLevel integration to capture and post caller information accurately. While new to freelancer, I have 15yrs of great experience in API integrations and workflow automations. I would love to chat more about your project! Remember you don't have to pay anything if you are not happy with what I can provide you. Regards, DJ van Vuuren
$250 USD in 5 days
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